Patents Assigned to Karf Engineering GmbH
  • Patent number: 4781238
    Abstract: A refractory channel connection apparatus transfers molten metal from a metallurgical vessel into a mold of a continuous casting machine formed by a peripheral groove and a casting wheel and a band covering the open side of the groove. The channel connection apparatus includes a refractory pouring tube having an inlet end connected to the discharge nozzle of the metallurgical vessel, an outlet end and a molten metal passage extending from the inlet end to the outlet end. A refractory nozzle extension is provided at the outlet end of the pouring tube, the nozzle extension having therethrough a flow through passage communicating with the passage of the pouring tube, an outer profile dimensioned to extend tangentially into the mold and to define therewith a gas seal slot, and a lower end extending into the mold to a level above the upper level of metal cast therein.
    Type: Grant
    Filed: July 8, 1987
    Date of Patent: November 1, 1988
    Assignees: Didier-Werke AG, Karf Engineering GmbH
    Inventors: Laurenz Keisers, Kurt Engelmann, Johannes Steins